Lubricant.



JAMES W. WATKINS, OF ZANESVILLE, OHIO, 'ASSIGNOR 01E ONE-HALF TO JOSEPH'r.

ADAMS. OF TERRE HAU'IE, INDIANA.

Patented Nov. 9, 1909.

LUBRICANT.

939,646. Specification of Letters Patent. No Drawing.

To all whom it may concern.

Be it known that I, JAMES W. VVATmNs, a citizen of the United States,residing at Zanesvill'e, in the county of Mu'skingum and State of .Ohio,have-invented certainnew and useful Improvements in Lubricants, of whichthe following is a specification.

The object of my invention is to produce a composition which will serveas a lubricant having cooling qualities so that, when applied to hotboxes in railroad rolling stock, the temperature of the bearing journalwill be rapidly reduced.

The composition comprises (7.) Italian castile soap; which I have foundby experiment to be the only Soap, at present known to me, capable ofproducing desired results. The soap forms a body for the lubricant andthis particular soap appears to possess cooling ingredients which nocommon soap contains.

(2) Flake graphite; possessing the well known characteristic ofsmoothing the journals and bearings. I find that flaked graphite ispreferable to stick or powdered graphite as it appears, by tests, towear longer.

(3) Ammonia (about a 10% solution) which serves to cut and reduce anyaccumulation of gum on the journals and absorb heat from the journals.

(4) A mineral machine standing high temperatures. i

(5) Tallow; used in somewhat varying quantities in order to vary theconsistency of the compound.

oil capable of (6) Common salt; which gives to the compound a heatabsorbing value.

' ess, of water.

formed by bringing to Application filed January 14, 1809. Serial No.472,341.

(7) Water for dissolving the soap.

I find that, for producing approximately one gallon of the compound, thefollowing proportions and ingredients are desirable: 1% pounds ofItalian castile soap, J,- pound fiaked graphite, 1 gill of ammonia, 2quarts of heavy machine oil, 9; pound tallow, 1 ound common salt, and 3pints, more or The water is heated and the soap dissolved therein andthe tallow, machine oil, ammonia and graphite added and thoroughlystirred so as to make a homoge neous mixture. \Vhen cool the mixture isapplied in the ordinary manner of a lubricant. In practice it hasbeen-found that, when so applied to heated journals or bearings,thetemperature will be rapidly reduced although the parts he continued 111operation. Y

I claim as my invention:

1. A temperature reducing lubricant ether soap, graphite, ammonia,mineral mac ine oil, tallow, commonsalt and water.

2. A temperature reducing lubricant formed by bringing together Italiancastile soap, flaked aphite, ammonia, mineral machine oil, tal ow,common salt and water, in substantially the proportions specified.

, -In witness whereof, I, have hereunto set my hand and seal atZanesville, Ohio, this 8th day of January, A. D. one thousand ninehundred and nine.

JAMES W. WATKINS. [L. s.]'

Witnesses:

A. A. ,Gnonen,

Nun. M. BECKLEY.

